Were do i locate the Fuel Pump relay on a 2001 F250 Ford

In the fuse box under the hood
Lid has list of location on the inside

Having fuel delivery problems ? It's not the fuel pump relay ! You probably have a bad fuel pump driver module . Pull you spare tire down an look on the frame above ! Watch this
F150 Expedition No Start P1233 Fuel Pump Driver Module

Here is a link to a 2005 Gas 5.4. IT should be exact or very similar.
http://www.ford-trucks.com/forums/905288-no-start-issue-2005-f250-5-4l-2.html

It's inside the fuel tank. You have to drop the tank to access it.

I'm not finding info. on the fuel pump relay location on the 2001 F250. Would you like contact info. for a local mechanic?
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faulty starter relay in the engine bay. should click when you turn key but if its melted into place it will keep the engine running.

The Fuel pump relay for this vehicle is not removable, not smart on Ford's part. What I used to do is disconnect the fuel inertia switch which is located right next to the fuse panel on the passenger side lower kick panel, closest to the firewall. It's tough to get to but can be done. I've seen guys take the inertia switch to pop it then reset it when ready but I'd recommend just disconnecting the connector, and run the engine til it stalls, replace the filter then reinstall connector. The filter can be disconnected without disconnecting the switch by using the fuel clip tool and slowly pulling the line off, allowing pressure to drop but this should be done by an experienced person wearing safety glasses only.

Disconnecting the inertia switch and running the engine til stall could throw a diagnostic code/engine lamp but this can simply be erased by disconnecting the negative battery terminal for 5 minutes. Good luck, please ask if more help is needed.

can anyone answer this question. I to have exactly the same problem

it should be the small green relay that is on the inner passenger side fender

Do you have access to an amp clamp to check amps going to the glow plugs. Remove the oil temp sender which is on the back of the hi psi oil pump reservior 2 wires. This will make the relay run longer. Then hook clamp over the 2 brown wires on glowplug relay should have about 175 amps if its working right. I have also seen the fuel heater inside the fuel filter housing go bad as well. Might check all the fuses as well incase the fuel heater fuse is blown.